castle season 5 finale watershed 5 things abc 'Castle' Season 5 finale preview: 5 things to know about 'Watershed'Do Castle and Beckett break up? Will Beckett leave town for a new, federal job? These questions will be answered in the “Castle” Season 5 finale, “Watershed.”

Unfortunately, we’re not going to give you those answers here. Here are 5 “Castle” spoilers to tantalize you until the show chooses to tell us the big relationship news.

1. You know those big water storage tanks they have on the tops of some buildings? Leave a bloody and dead body floating in one, and your neighbors may get to bathe in blood.

2. The first time we see Beckett (Stana Katic) in “Watershed,” she is in Washington, DC. Yes, she’s taking the job possibility that seriously.

3. Alexis (Molly Quinn) wants to go to Costa Rica. Castle (Nathan Fillion) is stalling about paying for it. One of his reasons is “toucans” that are “extremely aggressive.” It’s possible that that’s not his real reason.

4. When speaking of the murder victim and her life, Castle refers to the woman’s story as “a tragic, yet not-so-familiar tale.”

5. How is Beckett job-hunting in DC without Castle having any clue about it? For one thing, she’s not telling him. For another, Castle is in the process of finishing one of his books and actually has things to do for once.

The “Castle” Season 5 finale airs on Monday, May 13 at 10pm on ABC.

Posted by:Laurel Brown